package com.youchuang.util;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;

public final class ImageUtil {
	private static final String[] chars = { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E",
			"F", "G", "H", "J", "K", "L", "M", "N", "P" };
	private static final int SIZE = 5;
	private static final int LINES = 7;
	private static final int WIDTH = 100;
	private static final int HEIGHT = 50;
	private static final int FONT_SIZE = 30;

	public static Map<String, BufferedImage> createImage() {
		StringBuffer sb = new StringBuffer();
		BufferedImage image = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_RGB);
		Graphics graphic = image.getGraphics();

		graphic.setColor(Color.LIGHT_GRAY);
		graphic.fillRect(0, 0, WIDTH, HEIGHT);

		Random ran = new Random();
		for (int i = 1; i <= SIZE; i++) {
			int r = ran.nextInt(chars.length);
			graphic.setColor(getRandomColor());
			graphic.setFont(new Font(null, Font.BOLD + Font.ITALIC, FONT_SIZE));
			graphic.drawString(chars[r], (i - 1) * WIDTH / SIZE, HEIGHT / 2);
			sb.append(chars[r]);
		}
		for (int i = 1; i <= LINES; i++) {
			graphic.setColor(getRandomColor());
			graphic.drawLine(ran.nextInt(WIDTH), ran.nextInt(HEIGHT), ran.nextInt(WIDTH), ran.nextInt(HEIGHT));
		}
		Map<String, BufferedImage> map = new HashMap<String, BufferedImage>();
		map.put(sb.toString(), image);
		return map;
	}

	public static Color getRandomColor() {
		Random ran = new Random();
		Color color = new Color(ran.nextInt(156), ran.nextInt(156), ran.nextInt(156));
		return color;
	}
}
